Media content-type header is not being generated for input file types.

[timayabi2020]

The defined media type content description for an api path are not picked, instead the API treats the request as an application/octet-stream for all input file types.

To reproduce the issue:

1. Run autorest against the config file below autorest --title:"Identity.DirectoryManagement" config.yml --verbose

   powershell: true
   version: latest
   use: '@autorest/powershell@3.0.509' #Replace with '@autorest/powershell@2.x' for autorest v2
   export-properties-for-dict: false
   subject-prefix: '-Mg'
   azure: false
   input-file: "https://raw.githubusercontent.com/timayabi2020/AutorestFiles/main/directorymanagement.yaml"
   output-folder: src\$(title)
   clear-output-folder: true
   use-internal-constructors: true
   use-datetimeoffset : true
   metadata:
   authors: Microsoft Corporation
   owners: Microsoft Corporation
   companyName: Microsoft Corporation
   description: 'Microsoft Graph PowerShell Cmdlets'
   copyright: © Microsoft Corporation. All rights reserved.
   tags: Microsoft Office365 Graph PowerShell PSModule PSIncludes_Cmdlet
   requireLicenseAcceptance: true
   licenseUri: https://aka.ms/devservicesagreement
   projectUri: https://github.com/microsoftgraph/msgraph-sdk-powershell
   iconUri: https://raw.githubusercontent.com/microsoftgraph/g-raph/master/g-raph.png
   directive:
   - no-inline:
   - MicrosoftGraphSharepointIds
   - MicrosoftGraphIdentitySet
   - MicrosoftGraphItemReference
   - MicrosoftGraphDirectoryObject
   - MicrosoftGraphUser
   - MicrosoftGraphDrive
   - MicrosoftGraphListItem
   - MicrosoftGraphPost
   - MicrosoftGraphSectionGroup
   - MicrosoftGraphTeam
   - MicrosoftGraphRecipient
   - MicrosoftGraphGroupPolicyCategory
   - MicrosoftGraphPrinter
   - MicrosoftGraphPrinterShare
   - MicrosoftGraphGovernanceResource
   - MicrosoftGraphGovernanceRoleAssignment
   - MicrosoftGraphGovernanceRoleDefinition
   - MicrosoftGraphWorkbookOperationError
   - MicrosoftGraphParentLabelDetails
   - MicrosoftGraphEdiscoveryTag
   - MicrosoftGraphEdiscoverySourceCollection
   - MicrosoftGraphContentType
   - MicrosoftGraphColumnDefinition
   - MicrosoftGraphGroupPolicyDefinition
   - MicrosoftGraphGroupPolicyDefinitionValue
   - MicrosoftGraphSynchronizationLinkedObjects
   - MicrosoftGraphSecuritySecurity
   - MicrosoftGraphTeamSummary
   - MicrosoftGraphSecurityInformationProtection
   - MicrosoftGraphSecurityInformationProtectionPolicySetting
   - MicrosoftGraphSecuritySensitivityLabel
   - MicrosoftGraphTaskViewpoint
   - MicrosoftGraphSecurityEdiscoveryReviewTag
   - MicrosoftGraphSecurityEdiscoverySearch
   - MicrosoftGraphManagedTenantsManagementTemplateStep
   - MicrosoftGraphPlannerTaskCreation
   - MicrosoftGraphPlannerTeamsPublicationInfo

2. Go to Identity.DirectoryManagement.cs file under "generated\api\" folder. request.Content has been set to null.

[dolauli]

@timayabi2020 Would you please post a link to config.yml?

[isra-fel]

Xiaogang to look into the swagger file https://raw.githubusercontent.com/timayabi2020/AutorestFiles/main/directorymanagement.yaml

[timayabi2020]

@dolauli https://[raw.githubusercontent.com/timayabi2020/AutorestFiles/main/config.yml](https://raw.githubusercontent.com/timayabi2020/AutorestFiles/main/config.yml)